added optimized ddot kernel for POWER8
authorWerner Saar <wernsaar@googlemail.com>
Sun, 20 Mar 2016 10:06:06 +0000 (11:06 +0100)
committerWerner Saar <wernsaar@googlemail.com>
Sun, 20 Mar 2016 10:06:06 +0000 (11:06 +0100)
kernel/power/KERNEL.POWER8
kernel/power/ddot.c [new file with mode: 0644]
kernel/power/ddot_microk_power8.c [new file with mode: 0644]

index eaa9f26..1e0c6a5 100644 (file)
@@ -121,7 +121,7 @@ ZTRSMKERNEL_RT      = ../generic/trsm_kernel_RT.c
 #ZCOPYKERNEL  = ../arm/zcopy.c
 #
 #SDOTKERNEL   = ../arm/dot.c
-#DDOTKERNEL   = ../arm/dot.c
+DDOTKERNEL   =  ddot.c
 #CDOTKERNEL   = ../arm/zdot.c
 #ZDOTKERNEL   = ../arm/zdot.c
 #
diff --git a/kernel/power/ddot.c b/kernel/power/ddot.c
new file mode 100644 (file)
index 0000000..488d2a7
--- /dev/null
@@ -0,0 +1,132 @@
+/***************************************************************************
+Copyright (c) 2014, The OpenBLAS Project
+All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+1. Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in
+the documentation and/or other materials provided with the
+distribution.
+3. Neither the name of the OpenBLAS project nor the names of
+its contributors may be used to endorse or promote products
+derived from this software without specific prior written permission.
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*****************************************************************************/
+
+
+#include "common.h"
+
+
+#if defined(POWER8) 
+#include "ddot_microk_power8.c"
+#endif
+
+
+#ifndef HAVE_KERNEL_8
+
+static void ddot_kernel_8(BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *d)
+{
+       BLASLONG register i = 0;
+       FLOAT dot = 0.0;
+
+       while(i < n)
+        {
+              dot += y[i]  * x[i]
+                  + y[i+1] * x[i+1]
+                  + y[i+2] * x[i+2]
+                  + y[i+3] * x[i+3]
+                  + y[i+4] * x[i+4]
+                  + y[i+5] * x[i+5]
+                  + y[i+6] * x[i+6]
+                  + y[i+7] * x[i+7] ;
+
+              i+=8 ;
+
+       }
+       *d += dot;
+
+}
+
+#endif
+
+FLOAT CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
+{
+       BLASLONG i=0;
+       BLASLONG ix=0,iy=0;
+
+       FLOAT  dot = 0.0 ;
+
+       if ( n <= 0 )  return(dot);
+
+       if ( (inc_x == 1) && (inc_y == 1) )
+       {
+
+               BLASLONG n1 = n & -16;
+
+               if ( n1 )
+                       ddot_kernel_8(n1, x, y , &dot );
+
+               i = n1;
+               while(i < n)
+               {
+
+                       dot += y[i] * x[i] ;
+                       i++ ;
+
+               }
+               return(dot);
+
+
+       }
+
+       FLOAT temp1 = 0.0;
+       FLOAT temp2 = 0.0;
+
+        BLASLONG n1 = n & -4;  
+
+       while(i < n1)
+       {
+
+               FLOAT m1 = y[iy]       * x[ix] ;
+               FLOAT m2 = y[iy+inc_y] * x[ix+inc_x] ;
+
+               FLOAT m3 = y[iy+2*inc_y] * x[ix+2*inc_x] ;
+               FLOAT m4 = y[iy+3*inc_y] * x[ix+3*inc_x] ;
+
+               ix  += inc_x*4 ;
+               iy  += inc_y*4 ;
+
+               temp1 += m1+m3;
+               temp2 += m2+m4;
+
+               i+=4 ;
+
+       }
+
+       while(i < n)
+       {
+
+               temp1 += y[iy] * x[ix] ;
+               ix  += inc_x ;
+               iy  += inc_y ;
+               i++ ;
+
+       }
+       dot = temp1 + temp2;
+       return(dot);
+
+}
+
+
diff --git a/kernel/power/ddot_microk_power8.c b/kernel/power/ddot_microk_power8.c
new file mode 100644 (file)
index 0000000..085c163
--- /dev/null
@@ -0,0 +1,170 @@
+/***************************************************************************
+Copyright (c) 2014, The OpenBLAS Project
+All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+1. Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in
+the documentation and/or other materials provided with the
+distribution.
+3. Neither the name of the OpenBLAS project nor the names of
+its contributors may be used to endorse or promote products
+derived from this software without specific prior written permission.
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*****************************************************************************/
+
+#define HAVE_KERNEL_8 1
+static void ddot_kernel_8( BLASLONG n, FLOAT *x, FLOAT *y , FLOAT *dot) __attribute__ ((noinline));
+
+static void ddot_kernel_8( BLASLONG n, FLOAT *x, FLOAT *y, FLOAT *dot)
+{
+
+
+       BLASLONG i = n;
+       BLASLONG o16 = 16;
+       BLASLONG o32 = 32;
+       BLASLONG o48 = 48;
+       BLASLONG o64 = 64;
+       BLASLONG o80 = 80;
+       BLASLONG o96 = 96;
+       BLASLONG o112 = 112;
+       FLOAT *x1=x;
+       FLOAT *y1=y;
+       BLASLONG pre = 384;
+
+       __asm__  __volatile__
+       (
+       "xxlxor         32,32,32                            \n\t"
+       "xxlxor         33,33,33                            \n\t"
+       "xxlxor         34,34,34                            \n\t"
+       "xxlxor         35,35,35                            \n\t"
+       "xxlxor         36,36,36                            \n\t"
+       "xxlxor         37,37,37                            \n\t"
+       "xxlxor         38,38,38                            \n\t"
+       "xxlxor         39,39,39                            \n\t"
+
+       "dcbt           %2, %12                             \n\t"
+       "dcbt           %3, %12                             \n\t"
+
+       "lxvd2x         40, 0, %2                           \n\t"
+       "lxvd2x         48, 0, %3                           \n\t"
+       "lxvd2x         41, %5, %2                          \n\t"
+       "lxvd2x         49, %5, %3                          \n\t"
+       "lxvd2x         42, %6, %2                          \n\t"
+       "lxvd2x         50, %6, %3                          \n\t"
+       "lxvd2x         43, %7, %2                          \n\t"
+       "lxvd2x         51, %7, %3                          \n\t"
+       "lxvd2x         44, %8, %2                          \n\t"
+       "lxvd2x         52, %8, %3                          \n\t"
+       "lxvd2x         45, %9, %2                          \n\t"
+       "lxvd2x         53, %9, %3                          \n\t"
+       "lxvd2x         46, %10, %2                         \n\t"
+       "lxvd2x         54, %10, %3                         \n\t"
+       "lxvd2x         47, %11, %2                         \n\t"
+       "lxvd2x         55, %11, %3                         \n\t"
+
+       "addi           %2, %2, 128                         \n\t"
+       "addi           %3, %3, 128                         \n\t"
+
+       "addic.         %0 , %0 , -16                        \n\t"
+       "ble            2f                                   \n\t"
+
+       ".align 5                                           \n\t"
+       "1:                                                 \n\t"
+
+       "dcbt           %2, %12                             \n\t"
+       "dcbt           %3, %12                             \n\t"
+
+       "xvmaddadp      32, 40, 48                  \n\t"
+       "lxvd2x         40, 0, %2                           \n\t"
+       "lxvd2x         48, 0, %3                           \n\t"
+       "xvmaddadp      33, 41, 49                  \n\t"
+       "lxvd2x         41, %5, %2                          \n\t"
+       "lxvd2x         49, %5, %3                          \n\t"
+       "xvmaddadp      34, 42, 50                  \n\t"
+       "lxvd2x         42, %6, %2                          \n\t"
+       "lxvd2x         50, %6, %3                          \n\t"
+       "xvmaddadp      35, 43, 51                  \n\t"
+       "lxvd2x         43, %7, %2                          \n\t"
+       "lxvd2x         51, %7, %3                          \n\t"
+       "xvmaddadp      36, 44, 52                  \n\t"
+       "lxvd2x         44, %8, %2                          \n\t"
+       "lxvd2x         52, %8, %3                          \n\t"
+       "xvmaddadp      37, 45, 53                  \n\t"
+       "lxvd2x         45, %9, %2                          \n\t"
+       "lxvd2x         53, %9, %3                          \n\t"
+       "xvmaddadp      38, 46, 54                  \n\t"
+       "lxvd2x         46, %10, %2                         \n\t"
+       "lxvd2x         54, %10, %3                         \n\t"
+       "xvmaddadp      39, 47, 55                  \n\t"
+
+       "lxvd2x         47, %11, %2                         \n\t"
+       "lxvd2x         55, %11, %3                         \n\t"
+
+
+       "addi           %2, %2, 128                         \n\t"
+       "addi           %3, %3, 128                         \n\t"
+
+       "addic.         %0 , %0 , -16                        \n\t"
+       "bgt            1b                                   \n\t"
+
+       "2:                                                  \n\t"
+
+       "xvmaddadp      32, 40, 48                  \n\t"
+       "xvmaddadp      33, 41, 49                  \n\t"
+       "xvmaddadp      34, 42, 50                  \n\t"
+       "xvmaddadp      35, 43, 51                  \n\t"
+       "xvmaddadp      36, 44, 52                  \n\t"
+       "xvmaddadp      37, 45, 53                  \n\t"
+       "xvmaddadp      38, 46, 54                  \n\t"
+       "xvmaddadp      39, 47, 55                  \n\t"
+
+       "xvadddp        32, 32, 33                   \n\t"
+       "xvadddp        34, 34, 35                   \n\t"
+       "xvadddp        36, 36, 37                   \n\t"
+       "xvadddp        38, 38, 39                   \n\t"
+
+       "xvadddp        32, 32, 34                   \n\t"
+       "xvadddp        36, 36, 38                   \n\t"
+
+       "xvadddp        32, 32, 36                   \n\t"
+
+       "xxswapd        33, 32                       \n\t"
+
+       "xsadddp        32, 32, 33                   \n\t"
+
+       "stxsdx         32, 0, %4                            \n\t"
+
+       :
+        : 
+          "r" (i),     // 0    
+         "r" (n),      // 1
+          "r" (x1),     // 2
+          "r" (y1),     // 3
+          "r" (dot),    // 4
+         "r" (o16),    // 5
+         "r" (o32),    // 6
+         "r" (o48),    // 7
+          "r" (o64),    // 8
+          "r" (o80),    // 9
+          "r" (o96),    // 10
+          "r" (o112),   // 11
+         "r" (pre)     // 12
+       : "cr0", "%0", "%2" , "%3", "memory"
+       );
+
+} 
+
+